8-66E Refrigerant-134a enters an adiabatic compressor as saturated vapor at 30 psia at a rate of 20 ft3/min and exits at 70 psia pressure. If the isentropic efficiency of the compressor is 80 percent, determine a) the actual power input and b) the second-law efficiency of the compressor. Assume the surroundings to be at 75°F. | |
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